package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundTo;
import com.atguigu.common.es.SkuEsModel;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.ware.vo.SkuHasStockVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.alibaba.fastjson.TypeReference;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;
    @Autowired
    SpuImagesService imagesService;
    @Autowired
    AttrService attrService;
    @Autowired
    ProductAttrValueService attrValueService;
    @Autowired
    SkuInfoService skuInfoService;
    @Autowired
    SkuImagesService skuImagesService;
    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;
    @Autowired
    BrandService brandService;
    @Autowired
    CategoryService categoryService;
//    CategoryBrandRelationService categoryBrandRelationService;
    @Autowired
    WareFeignService wareFeignService;
    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<>()
        );
        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
//       1. 保存Spu基本信息：pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
//        this.saveBaseSpuInfo(infoEntity);
        this.save(infoEntity);
//       2. 保存Spu的描述图片：pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",", decript));
        spuInfoDescService.save(descEntity);
//       3. 保存Spu的图片集：pms_spu_images
        List<String> images = vo.getImages();
        imagesService.saveImages(infoEntity.getId(), images);
//       4. 保存Spu的规格参数：pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream()
                .map(attr -> {
                    ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
                    valueEntity.setAttrId(attr.getAttrId());
                    AttrEntity id = attrService.getById(attr.getAttrId());
                    valueEntity.setAttrName(id.getAttrName());
                    valueEntity.setAttrValue(attr.getAttrValues());
                    valueEntity.setQuickShow(attr.getShowDesc());
                    valueEntity.setSpuId(infoEntity.getId());
                    return valueEntity;
                })
                .collect(Collectors.toList());
//                attrValueService.saveProd uctAttr(collect);
                attrValueService.saveBatch(collect);
//       5. 保存spu的积分信息；gulimall_sms-sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds, spuBoundTo);
        spuBoundTo.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if(r.getCode() != 0){
            log.error("远程保存sku积分信息失败");
        }
//       5. 保存当前Spu对应的所有Sku信息：
//        5.1) Sku的基本信息：pms_sku_info
        List<Skus> skus = vo.getSkus();
        if(skus != null && skus.size() > 0){
            skus.forEach(item->{
                String defaultImg = "";
                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1) {
                        defaultImg = image.getImgUrl();
                    }
                }
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
//                skuInfoService.saveSkuInfo(skuInfoEntity);
                skuInfoService.save(skuInfoEntity);
                Long skuId = skuInfoEntity.getSkuId();
                List<SkuImagesEntity> imagesEntities = item.getImages().stream()
                    //我们只需要保存图片当他存在的时候
                    .filter(entity-> !StringUtils.isEmpty(entity.getImgUrl()))
                    .map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                })

                .collect(Collectors.toList());
                //        5.2) Sku的图片信息：pms_sku_images
                skuImagesService.saveBatch(imagesEntities);
                //TODO 没有上传图片不用保存。

                //        5.3) Sku的销售属性信息：pms_sku_sale_attr_value
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, attrValueEntity);
                    attrValueEntity.setSkuId(skuId);
                    return attrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);
//        5.4) Sku的优惠、满减等信息 gulimallsms->sms_sku Ladder\sms_sku full_reduction\sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item, skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1) {
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r1.getCode() != 0) {
                        log.error("远程保存sku优惠信息失败");
                    }
                }
            });
        }


    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        LambdaQueryWrapper<SpuInfoEntity> wrapper = new LambdaQueryWrapper<>();
        String key = (String) params.get("key");
        String status = (String) params.get("status");
        String brandId = (String) params.get("brandId");
        String catelogId = (String) params.get("catelogId");
        if(!StringUtils.isEmpty(key)) {
            wrapper.and((w) -> w.eq(SpuInfoEntity::getId, key)
                    .or().like(SpuInfoEntity::getSpuName, key));
        }
            wrapper.eq(!StringUtils.isEmpty(status),SpuInfoEntity::getPublishStatus, status)
                    .eq(!StringUtils.isEmpty(brandId),SpuInfoEntity::getBrandId, brandId)
                    .eq(!StringUtils.isEmpty(catelogId),SpuInfoEntity::getCatalogId, catelogId);



        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );
        return new PageUtils(page);
    }

    /**
     * 商品上架
     * @param spuId
     */
    @Override
    public void up(Long spuId) {
        // 1. 根据指定的 spuId 获取所有相关的 SKU 信息和品牌名字
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());
        //TODO 查询当前sku的所有可以检索的规格属性
        List<ProductAttrValueEntity> baseAttrs = attrValueService.baseAttrlistforspu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> attr.getAttrId()).collect(Collectors.toList());
        List<Long> searchAttrsIds = attrService.selectSearchAttrsIds(attrIds);//在指定的所有属性集合里面，挑出检索属性
        Set<Long> idSet  = new HashSet<>(searchAttrsIds); //判断
        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(item -> idSet.contains(item.getAttrId()))
                .map(item -> {
                    SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
                    BeanUtils.copyProperties(item, attrs1);
                    return attrs1;
                }).collect(Collectors.toList());
            //TODO 发送远程调用，库存系统查询是否有库存
        Map<Long, Boolean> stockMap = null;
        try {
            R skusHasStock = wareFeignService.getSkusHasStock(skuIdList);
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>(){};
            stockMap = skusHasStock.getData(typeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, item -> item.getHasStock()));
        } catch (Exception e) {
            log.error("库存服务异常，原因{}",e);
        }

        //2.封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            //组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku, esModel);
            //添加补充数据（名字不同需要手动拷贝
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            //是否有库存？设置库存信息
            if(finalStockMap == null){
                esModel.setHasStock(true);
            }
            else
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));

            // TODO 热度评分，
            // TODO 查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(esModel.getBrandId());
            CategoryEntity category = categoryService.getById(esModel.getCatalogId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());
            esModel.setCatalogName(category.getName());
            esModel.setAttrs(attrsList);//设置检索属性
            return esModel;
        }).collect(Collectors.toList());
        //TODO 将数据发送给es进行保存
        R r = searchFeignService.productStatusUp(upProducts);
        if(r.getCode() == 0){
            //远程调用成功
            //TODO 修改上架的spu状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }
        else{
            //失败
            //TODO 重复调用？接口幂等性
        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity byId = skuInfoService.getById(skuId);
        Long spuId = byId.getSpuId();
        SpuInfoEntity spuInfoEntity = getById(spuId);
        return spuInfoEntity;
    }

}